Apparatus for operating vapor converters.



v P. GIHEWITT. APPARATUS FOR OPERATING VAPOR CONVERTERS. APPLICATION FILED APR. 8, 1904.

1,091,223; Patented Mar. 24, 191

2 SHEBTS-SHEET 1.

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Qvi/bvwowo v 8mm. 7/ 4 I P. G. HEWITT.

APPARATUS FOR OPERATING VAPOR CONVERTERS.

APPLICATION FILED APR. 8,1904. 1,091,223. Patented Mar. 24, 1914 2 SHEETS-SHEET 2.

UNIT D sTA Es PATENT oEEioE.

PET R COOPER HEWITT, or NEW YORK, N. Y.; Assx'e oa, BY MEsNE ASSIGNMENTS,

To COOPER HEWITT ELECTRIC COMPANY, OF HOBOKEN, NEW JERSEY, A CORPO- RATION OF NEW JERSEY;

APPARATUS Eon. OPERA ING; vAPoE ooNvEnTERs.

Specification of Letters Patent.

Application filed April 8, 1904. Serial No. 202,191.

To all whom it may concern:

Be it known that I, PETER COOPER HEWITT, a citizen of the United States, and resident of New York, county of New York, State of New York, have invented certain new and useful Improvements i Apparatus for Operating Vapor Convertei' s the following is a specification.

I have found that it is possible-to operate translating devices in a work circuit from a single phase source of alternating currents, with the aid ofvapor converters, by deriving from a single phase'source fourphase currents, utilizing two of the derived currents, approximately 180 apart, for

keeping the converter alive, and utilizing the, other two derived currents, approxlmatelyv 180 apart, for operating the translating devices. approaching 90 and 270" being somewhere between 0 and 90 and 180 and 270. The several derived currents may be produced from the same transformer, but

in such cases there is apt to be difliculty due to short-circuits. According to my present invention employ two transformers, one having two secondaries for performing the operation of keeping the vapor converter alive, the other, being preferably an autotransformer having a' single secondary, or such an arrangement of apparatus or circuits as will give approximately the same result.

My invention Will be understood by reference to the accompanying drawings, in

- which- Figures 1 and 2 are diagrams of circuits adapted to the accomplishment of the purtwo secondaries, 5 and 6, the arrangement being such that the currents derived from the said second-tries are 180 apart. The primary 3 is provided with a secondary, 7 the natural phase difference of the currents derived from the said primary and secondary being approximately 180.

In the system thus constituted I include a of which.

The two pairs of currents vapor converter, 8, having four positive electrodes, 9, 10, 11 and 12, and a common negative electrode, 13. The working positive electrodes are those which appear at 10 and 11, the electrodes 9 and 12 being adapted to serve the verter alive.

The electrodes 9. and 12 are connected, respectively to corresponding terminals of the trans ormer secondaries 5 and 6, while the negative electrode 13 is connected to an intermediate point between the said secondarms by means of a Wire, 14, including an inductance, 15.

Instead of using the inductance 15 in the conductor 14 an inductance may be included in the circuit of the electrodes 9 and 12, respectively, as shown, for example, in Fig. 2

of the drawing 'at 18 and 19. When these tance 15 shown in Fig. 1 may be omitted.

The electrodes 10'and 11 are, respectively, connected with corresponding terminals of the secondary 7 and the primary 3, While the terminals of the work circuit, 16, are connected to an intermediate point between the said primary and the secondary 011 the one hand and to the negative electrode 13 on Patented Mar. 2 4, 1914.

purpose of keeping the con the other. The work-circuit 16 may. include any suitable device which is to be affected by currents passing through the converter 8, say, for instance, a storage battery, 17.

The primary 4 acting through its secondaries 5 and" 6 serves to maintain current through the vapor converter 8 alternately by way of the electrodes 9 and 13 in one case and 12 and 13 in the other, The function of the inductance 15 is to assist in keeping alive the converter over the zero points. At. the same time the primary 3 and the secondary 7 are acting through the converter 8 to supply the translating devices in the work circuit 16.

In a divisional application Serial Number 241,948, filed January 20, 1905, the method of operation described herein is claimed.

I claim as my invention 1. In a system of electrical distribution, a source of single phase alternatingcurreiit, means for deriving four phase currents therefrom, a direct-current work circuit, an

intermediate device for applying energy 7 from the source to the work circuit in the l the negative electrode.

same direction at 0 and 180, and means for deriving currents approximately 90 or 270 for causing a continuous impressed electro-motive-force in one direction.

2. In a system of electrical distribution, a vapor converter having four positive electrodes and a common negative electrode, in 'combination with a transformer having the terminal of its primary connected with one of the positive electrodes and the negative electrode, and the, respective terminals of the secondary connected with a second positive electrode and the negative electrode, 11

- second transformer having two secondaries connected with one terminal of each, respectively to the remaining positive electrodes, and theintermediate point connected with 3. In a system of electrical distribution, a vapor converter havin trodes and a negative e ectrode, in combination' with a transformer having the terminals of its primary connected with one of the positive electrodes and the negative electrode, and the respective terminals of the secondary connected with a second positive electrode and the negative electrode another transformer, having two secondaries four positive elec each with one of their terminals connected,

respectively, to the'remaining positive electrodes, and the intermediate point connected with the negative electrode, and a work circuit, a converter for causing impulses of both polarities to traverse the work circuit in a uniform direction, and means for transmitting current derived from the said source for maintaining the vapor converter alive, such last named means consisting of a transformer having a primary connected between the main conductors from the source and having two secondaries whose impulses are applied to the said converter.

Signed at New York, in the county of New York, and State of New York, this 1st day-of April A. D. 1904.

PETER COOPER HEWITT.

Witnesses:

ALBERT P. WILLS, WM. H. OAPEL. 

